Counterbore without pilot, Countersink ⌀ DC: 30mm

Article no.: 216230 Catalog no.: 156520
Price per 1 Piece
Net price: CHF 136.00
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Countersink ⌀ DC (mm) Price per 1 Piece (incl. VAT)
  • Tool material: HSS
  • Standard: DIN 375
  • Shank: Morse taper

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Product details

Technical Data

Counterbore ⌀ 30 mm
Tool material HSS
Standard DIN 375
Shank Morse taper
for screw size M18
Hole ⌀ a 8 mm
Overall length L 180 mm
Morse taper MT 3
Feed f in steel < 500 N/mm2 0.2 mm/rev.
Colour ring without
Type of product Counterbore

Identification & Classification

Article number 216230
Catalog number 156520
EAN / GTIN 4045197088062
Manufacturer number 156520 30
Manufacturer/responsible person Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com

Application Table

Aluminium (short chipping)
N
33
Steel < 500 N/mm²
P
28
Steel < 750 N/mm²
P
27
Steel < 900 N/mm²
P
27
wet maximum
 

Description

Version:

Multi-edged, spiral fluted counterbore with recess in face for fitting various pilots. Pilot is clamped with a screw in the counterbore.

Application:

One counterbore can be used for several pilot holes of different diameters due to the interchangeable pilots.

Note:

The dimensions relate to screws DIN 912, 6912, 7984 and ISO 1207. However, with an appropriate pilot, a counterbore can be used for other screw sizes or counterbore / pilot diameter combinations.
For suitable reducing adapters for tools with MT shanks see No. 343000-343530.

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